I tried writing query using exists, but no success so far. Searching hasn’t helped so far.
I tried writing query using exists , but no success so far. Searching hasn’t
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I tried writing query using exists, but no success so far. Searching hasn’t helped so far.
If you attempt to alter a table that does not exist, the query will fail with an error:
Table 'database.table' doesn't existMySQL does support
ALTER IGNORE TABLE, but that only turns errors into warnings if you’re attempting to create a unique index while there are values in the table that violate that index.If you would like to make sure that you do not produce any database queries, I would suggest ensuring the table’s existence using
SHOW TABLES LIKE 'tablename'before running yourALTER TABLEquery.